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PartsTable / COMPONENT / BS1126PC177-181
BS1126PC177-181 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,PLAIN is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thread_class: 3A NUT THREAD A, thread_length: 1.150 INCHES NOMINAL NUT THREAD IN, overall_length: 3.200 INCHES NOMINAL IN, thread_direction: RIGHT-HAND STUD THREAD, nominal_thread_size: 0.438 INCHES STUD THREAD IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-398-9327, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BS1126PC177-181
NSN: 5307-00-398-9327
FSC: 5307
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_class3A NUT THREAD A
thread_length1.150 INCHES NOMINAL NUT THREAD IN
overall_length3.200 INCHES NOMINAL IN
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.438 INCHES STUD THREAD IN
cotter_pin_hole_diameter0.125 INCHES NOMINAL FIRST HOLE IN
thread_quantity_per_inch14 NUT THREAD
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) STUD THREAD
distance_from_cotter_pin_hole_centerline_to_nut_end3.075 INCHES NOMINAL FIRST HOLE IN
NSN5307-00-398-9327
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BS1126PC177-181 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END: 3.075 INCHES NOMINAL FIRST HOLE IN
•
THREAD CLASS: 3A STUD THREAD A
•
THREAD LENGTH: 1.150 INCHES NOMINAL STUD THREAD IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
MATERIAL: COPPER ALLOY
•
COTTER PIN HOLE DIAMETER: 0.125 INCHES NOMINAL FIRST HOLE IN
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM COTTER PIN HOLE CENTERLINE TO NUT END3.075 INCHES NOMINAL FIRST HOLE IN
THREAD CLASS3A STUD THREAD A
THREAD LENGTH1.150 INCHES NOMINAL STUD THREAD IN
THREAD CLASS3A NUT THREAD A
THREAD DIRECTIONRIGHT-HAND STUD THREAD
MATERIALCOPPER ALLOY
COTTER PIN HOLE DIAMETER0.125 INCHES NOMINAL FIRST HOLE IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
OVERALL LENGTH3.200 INCHES NOMINAL IN
THREAD LENGTH1.150 INCHES NOMINAL NUT THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
32.688Interchangeable
interchangeable cross-reference
interchangeable
SG-3-DC-MInterchangeable
interchangeable cross-reference
interchangeable
A-A-51162Interchangeable
interchangeable cross-reference
interchangeable
SG3Interchangeable
interchangeable cross-reference
interchangeable
BS1137PC177-181Interchangeable
Same NIIN cross-reference
interchangeable
BS5-1715PC178Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS1126PC177-181?
BS1126PC177-181 is a STUD,PLAIN.
What parts can replace BS1126PC177-181?
There are 12 known substitutes for BS1126PC177-181: 32.688, SG-3-DC-M, A-A-51162 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BS1126PC177-181?
BS1126PC177-181 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-398-9327. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026